How to show documentation in Clojure -

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i following :

(defn ss [] "kjhhj") (doc ss)

but "nil" returned. why this?

update:

if :

(defn tt "kjhhj" [] 1) (str (doc tt) )

as shown empty string... "doc" output go out or something?

the docstring comes before arguments function. have defined function no docstring returns string.

user> (defn ss [] "kjhhj") #'user/ss user> (ss) "kjhhj" user> (doc ss) ------------------------- user/ss ([])   nil nil  user> (defn tt "kjhhj" []) #'user/tt user> (tt) nil user> (doc tt) ------------------------- user/tt ([])   kjhhj nil user>

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